Pipe conveyer roll



Dee. 5, 1933. R. H. s'rEARNs PIPE CONVEYER ROLL med April 14, `193m Patented Der.. 5,v 1933 I "Ur-nre' 1,937,991 Preis conversa ROLL Y l tosweil'I-I. Stearns, Milwaukee, Wis., assigner to Magnetic ManufacturingY Company, Milwaukee, Wis., a corporation of Viisconsin Application April 14,1930. serial Na; 444.323V

11 claims. (o1. 19e- 41) .Thisinvention relates to improvements in pipe conveyer rolls.

' Peripherally grooved rolls have long been used for conveying pipe and it has long been knownl 53 that the number of driving rolls could be reduced as compared with the number ci idler rolls by rendering the driving rolls magnetic. AThe use oi magnetic driving rolls, however, has'not'been' as Widespread as it might otherwise have been fic because of the expense of making repairs and replacements in drivingrolls of designs heretofore known. y It isfthe primary object of the'present'invention vto provide a novel and improved driving roll for use in iron pipe conveying mechanism, the roll being so designed that the annular peripheral flanges which engage the pipe for vthe propulsionvthereoi, may readily be removed, repaired or replaced individually or collectively- 2o without requiring the demounting of thepulley and without requiring extensive anchorage means. Y

Specically, it is an. object of this invention to provide apmagnetic driving roll for pipe conveying systems, in which roll segmental pole iianges are provided lin sectionsv subdivided at diierent angular points upon the opposite sides of the roll and respectively nterlocked with an undercut rib on the coil cover whereby only normal Aanchorage Vmeans is required at the outside faces of the rollv for the detachable flanges thereof.

In the drawing:

Figure 1 is an axial sectional View through a magnetic pipe driving` roll embodying this invention.

Figure 2 is an end elevationoi the roll shown in Figure 1.

Like parts are identified by the same reference v4o characters throughout the several views.

The core 5 which comprises the body of the roll closely follows ordinary practice in magnetic driving rolls of this type. It is provided with a deep peripheral groove at 6 containing the winding '7 which is supplied with current in the usual way by means of a commutator which is not shown, but is housed within case 8. shaft 9 upon which the roll is mounted and to which it is keyed, passes through the commutator case.

Instead of allowing the pipes to Contact directly with the core 5 or" the magnetic roll, I provide detachable tread segments 15, 16, 1'? and 18. Each such segment has a centrally projecting iiange 19 adjacent the exposed margin of The its inner-periphery andthe several anges are bolted tothe shouldered outer facesof the core 5 as clearly shown in Figure 1. c ...Since none of the segmental 'tread membersA is morethan 180 degrees in extent, it is veryr 60 easily possible to .remove any individualv tread member, or. all of the tread'members, for Lrepair or replacement without dismounting the roll or any of therbearings for the Aroll shaft. It is Lto be noted thatthe sectional tread construction @5 :does not interfere with the handling ofpipe since the anchorage bolts are placed'at the sides of the roll andthe joints between sections ,are oset. f

`When the current is supplied to the winding 7 no mechanical means of anchoring the tread segments is necessary 'since they areiirmly heldv in place by magnetic attraction. It mayhappen, however, that such a roll might be operated at relatively high speed at atime when current was cut oi therefrom and in order to secure the heavy tread segments against the action of centrifugal forceimder such circumstances, it is preferred to supplement the action of the bolts above described byproviding means Whichgholds 30 those portionsfof the tread segments which are near the central plane ofthe roll.

1n order to anchor these inner margins ofthe tread segmentsf provide the annular coil cover 2O with a centrelperipheral dove-tailed rib 2 1. 85

The central'faces `22y 0f vthe several tread segments are beveled toi interlock beneath the undercut sidev margins ofthe rib 21 thereby securely anchoring the central margin of each K tread segmentagainst radial displacement. The rib 21 not only serves to perform this anchorage function but also acts as a positive spacing means 'Y for determining the proper distance between the segments. f

When the anchoragev bolts are tightenedv to force the segments against the rib 21 and against the shouldered outer faces of the core 5, the result is a positive interlock of the several segments with the coil cover 20,*and therebywwith c each other, while, at the same time, the shortmo circuiting of magnetic flux is prevented by the interpcsition of the coil cover rib 21, which, like the coil cover, is preferably made of brass or other non-magnetic metal. Such'a roll has entirely adequate mechanical strength to withstand not only ordinary usage, but also abuse through operation Without current. Its life is greatly prolonged by the arrangement which permits replacement of its tread and the practicability of a replaceable tread roll is enhanced by the arrangement permitting the independent removal of separate segments Without demounting the roll.

I claim:

1. In a pipe conveyer roll, the combination of a core member having a peripheral Winding, a plurality of polar thread segments, means adapted to independently secure said segments to said core member, and peripheral interlocking means restraining portions of said segments from radial displacement.

2. In a magnetic pipe conveyer roll, the combination of a core member provided With a peripheral Winding, of polar treads anchored to said core member at its end faces and provided with centrally disposed interlocking means adapted to restrain central portions of said treads against radial displacement. i

3. In a magnetic pipe conveyer roll, the combination of a core member provided with a peripheral Winding, of polar treads anchored to said core member at its end faces and provided with centrally disposed interlocking means adapted to restrain central portions of said treads against radial displacement, said means comprising an undercut non-magnetic spacer member beneath the overhanging portions of Which the margins of said treads extends.

4. A magnetic pipe conveyer roll comprising a core having a peripheral Winding, an undercut annulus encircling said winding and a plurality of individually removable polar tread segments, means for connecting said segments with opposite end faces of said core and said segments having their inner margins respectively interlocked With said undercut annulus against radial displacement.

5. A magnetic pipe conveyer roll comprising a core having a peripheral Winding, an undercut annulus encircling said Winding and individually removable polar tread segments connected with opposite end lfaces of saidcore and having their inner margins respectively interlocked With said undercut annulus, said'k annulus comprising a ribbed non-magnetic coil cover for the Winding on said core.

6. Ina Amagnetic pipe` conveyer roll, the combination Withv a core having marginally shouldered end faces and a central Winding, of a cover band for said winding provided with an undercut annular rib and polar tread segments having anges complementary to theY shouldered portion of said core and individually connected therewith, the central margins of respective segments being interlocked With said undercut rib.

'7. In a magnetic conveyer roll, the combination of a core member provided with a magnetic winding, a plurality of polar tread segments, means adapted to independently secure said segments to said core member, and peripherally disposed means operative to restrain segment portions against radial displacement and to axially locate said segments. v

8. A magnetic conveyer roll comprising the combination of a core peripherally grooved to provide a Winding slot, an energizing winding positioned Within said slot, and a plurality of replaceable polar tread segments individually connected with each end of said core and projecting centrally across said Winding slot to protect saidwinding and to receive the load and Wear of articles conveyed by said roll, and means disposed on the periphery of said core spacing opposed margins of said segments and interlocking therewith to secure said segments against the radial displacement of their inner marginal portions.

9. In a pipe conveyer roll, the combination off a core member having a peripheral Winding, polar tread segments independently secured to said core member and provided With opposed beveled sides, and inter-locking means coacting with said sides for Yrestraining portions of said seg'- ments from radial displacement.

l0. In a pipe conveyer roll, the combination of a core member having a peripheral Winding, polar tread segments independently secured to said core member and provided With opposed incl-ined faces', and an annular cover for said winding,

said cover having interlocking means engaging said Afaces to restrain portions of said segments from radial displacement.

l1. A magnetic conveyer roll comprising a core having a peripheral groove to provide a winding slot, an energizing Winding positioned Within said slot, a plurality of polar tread segments indi'- vidually connected with each end of said core and provided With opposed tapered sides, and an annular cover for said slot having interlocking means coacting With said sides for restraining portions of said segments from radial displacement.

ROSWELL H. STEARNS. 

